[Bf-blender-cvs] [b43cfae49c6] blender-v3.3-release: Fix T102045: Properties Editor Attribute panels errors when pinning mesh

[Philipp Oeser]

Commit: b43cfae49c6847c9f505247ebd11d92bf82b84b1
Author: Philipp Oeser
Date:   Tue Oct 25 11:51:04 2022 +0200
Branches: blender-v3.3-release
https://developer.blender.org/rBb43cfae49c6847c9f505247ebd11d92bf82b84b1

Fix T102045: Properties Editor Attribute panels errors when pinning mesh

When pinning a Mesh, we cannot rely on the context object.
Instead, use the context mesh now.
For vertexgroups names [which are still on the object API wise], this
means name collisions cannot be checked when pinning a Mesh (so print
this as a warning in that case)

Maniphest Tasks: T102045

Differential Revision: https://developer.blender.org/D16333

===================================================================

M	release/scripts/startup/bl_ui/properties_data_mesh.py

===================================================================

diff --git a/release/scripts/startup/bl_ui/properties_data_mesh.py b/release/scripts/startup/bl_ui/properties_data_mesh.py
index 8f2141ba6fc..efcc2f51e9d 100644
--- a/release/scripts/startup/bl_ui/properties_data_mesh.py
+++ b/release/scripts/startup/bl_ui/properties_data_mesh.py
@@ -574,7 +574,7 @@ class DATA_PT_mesh_attributes(MeshButtonsPanel, Panel):
 
     def draw_attribute_warnings(self, context, layout):
         ob = context.object
-        mesh = ob.data
+        mesh = context.mesh
 
         unique_names = set()
         colliding_names = []
@@ -583,8 +583,11 @@ class DATA_PT_mesh_attributes(MeshButtonsPanel, Panel):
                 {"position": None, "material_index": None, "shade_smooth": None, "normal": None, "crease": None},
                 mesh.attributes,
                 mesh.uv_layers,
-                ob.vertex_groups,
+                None if ob is None else ob.vertex_groups,
         ):
+            if collection is None:
+                colliding_names.append("Cannot check for object vertex groups when pinning mesh")
+                continue
             for name in collection.keys():
                 unique_names_len = len(unique_names)
                 unique_names.add(name)